Soils Phosphorus Content
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. DinÃmica de fÃsforo em manguezais impactados por Ãguas residuÃrias no Estado do CearÃ. / Dynamics of phosphorus in mangroves impacted by the state of CearÃ.
Recent studies demonstrated the efficacy of mangrove retaining nutrients and, in particular, the ability of the mineral component of the buffer in its high soil phosphorus levels. In general, the mangroves have been considered as important sinks of nutrients due to its high capacity purification of effluents. However, depending on the geochemical conditions
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2012
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14. DISPONIBILIDADE E TRANSFERÊNCIA DE NITROGÊNIO, FÓSFORO E POTÁSSIO EM UM ARGISSOLO SUBMETIDO À APLICAÇÃO DE FONTES DE NUTRIENTES / AVAILABILITY AND TRANSFER OF NITROGEN, PHOSPHORUS AND POTASSIUM IN SANDY TYPIC HAPLUDALF SOIL SUBMITTED TO THE APPLICATION OF SOURCES OF NUTRIENTS
The swine and cattle activities are of great economic and social importance in Brazil in the southern region, but generate of large volumes of waste, that when applied to the soil can be mineralized and part of the nutrients released can be absorbed by plants or transferred by runoff or percolation. The aimed of this study was to evaluate the rate of mineral
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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15. Acompanhamento químico da vermicompostagem de lodo de esgoto doméstico
This research aims to monitor the humification process of domestic sewage sludge resulted from the vermicomposting, evaluating, also, the possibility of using the final product (vermicompost) in agricultural soils. The monitored chemical variables during the 90 days of vermicomposting were: humidity rate, organic matter content, nitrogen and phosphorus conte
Química Nova. Publicado em: 2011
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16. Establishment of recommendations and parameters for use of urban waste compost in agriculture in the State of Sao Paulo - Brazil.
The organic matter present in urban waste (45 to 60% of total dry mass), after being stabilized in the form of compost, is recommended for application in agricultural soils, since it improves its physical and chemical properties and benefits the soil biological processes. Also, the urban waste compost has been economically viable for application in agricultu
INTERNATIONAL ORBIT CONFERENCE. Publicado em: 2011
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17. COMUNIDADE DE ALGAS EPIFÍTICAS (COM ÊNFASE EM DIATOMÁCEAS) EM 23 VEREDAS DO ESTADO DE GOIÁS SOB DIFERENTES IMPACTOS AMBIENTAIS / Epiphytic algae community (with emphasis on diatoms) of Palm swamps of Goias State
(Epiphytic algae community of (with emphasis on diatoms) of Palm swamps of Goias State). The present study is the first to evaluating epiphytic algae community structure of in the subsystem Palm swamps in the Cerrado. The general hypotheses of this study were: impacted Palm swamps are under greater influence of allochthonous material, causing changes in limn
Publicado em: 2010
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18. Adubação fosfatada no plantio da cana-de-açúcar a partir de torta de filtro enriquecida com fosfato solúvel / Fertilization in the planting of sugarcane from the filter cake enriched with soluble phosphate
The phosphorus is considered an essential element for the plants and is in low amount in the Brazilian soils. The filter cake, mixture of sugarcane bagasse and sludge of decanter tanks, presents high organic matter, phosphorus and calcium content. The phosphorus existent in the filter cake is organic. The liberation of phosphorus and nitrogen happen gradual,
Publicado em: 2009
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19. FitorremediaÃÃo de arsÃnio: disponibilidade do metalÃide no solo e seu acÃmulo em girassol e mamona. / Arsenic phytoremediation: metalloid forms in soils and its accumulation in plants.
The increasing accumulation of arsenic (As) in soils and water bodies has caused increasing concern about human and animal exposure to this metalloid in the environment. As a result, studies assessing the bioavailability of arsenic by different soil extractants and the effect of phosphorus (P) upon this metalloidâs availability, combined with research compa
Publicado em: 2009
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20. Phosphorus dynamics and availability in soils cultivated with production coffee plants, / DinÃmica e disponibilidade de fÃsforo em solos cultivados com cafeeiro em produÃÃo
During many years coffee (Coffee arabica L.) plants have been considered low responsive to phosphorus fertilization. However, recent research data show that these plants demand high phosphorus quantity to fully develop their vegetative and reproductive systems. Aiming to know how phosphorus availability is influenced by annual P doses and how they may influe
Publicado em: 2009
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21. Distribuição do fósforo no perfil do solo sob sistema plantio direto
The Cerrado, even with soils of low fertility, has been increasing in importance within the Brazilian agricultural scenario, by planning the use and management of land, with the adoption of no-tillage system (NT) and the use of correctives and fertilizers. The application of fertilizers in NT is all doneon the soil surface, which leads to the accumulation of
Publicado em: 2009
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22. DinÃmica de nutrientes em solos arenosos adubados com esterco bovino por longos perÃodos / Dynamics of nutrients in sandy soils amended with cattle manure for long periods
Additions of farmyard manure (FYM) to the soil are a widely adopted alternative to supply nutrients, particularly nitrogen and phosphorus, in areas of subsistence agriculture in the semi-arid and agreste of Paraiba State. Additions of this residue in quantities that far exceed crop uptake, for long periods, can cause accumulation of nutrients in the soil. Th
Publicado em: 2008
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23. AVALIAÇÃO DA DISPONIBILIDADE DE FÓSFORO E RECOMENDAÇÃO DE ADUBAÇÃO FOSFATADA PARA CANA-PLANTA EM SOLOS DO ESTADO DE PERNAMBUCO / Evaluation of phosphorus availability and phosphate fertilizer recommendation for sugarcane in soils of Pernambuco State
Despite concerns with expected production, the phosphate fertilizer recommendation for Pernambuco lacks of the soil buffer capacity influence on P availability. Therefore, this work had as objective to 1) evaluate the maximum agronomic end economic influence of phosphate fertilizer in sugarcane, considering content and quality of clay fraction; 2) relate phy
Publicado em: 2008
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24. Dinâmica do fósforo em latossolo do cerrado sob sistema de integração lavoura-pecuária
The integration of crop-livestock systems (ILP) is one of the alternatives to recover the fertility of soils under degraded pastures in the Cerrado region. This system has positive effects on soil fertility and quality, increasing organic carbon contents and soil biological activity, thus requiring a new characterization of soil fertility by identifying soil
Publicado em: 2008